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February 9, 2012

Frontotemporal Dementia
(Pick's Disease)

What is frontotemporal dementia (Pick's disease)?

Frontotemporal dementia (FTD) describes a clinical syndrome associated with shrinking of the frontal and temporal anterior lobes of the brain. Originally known as Pick's disease, the name and classification of frontotemporal dementia has been a topic of discussion for over a century. The current designation of the syndrome groups together Pick's disease, primary progressive aphasia, and semantic dementia as FTD. Some doctors propose adding corticobasal degeneration and progressive supranuclear palsy to frontotemporal dementia and calling the group Pick Complex. These designations will continue to be debated.

What are the symptoms of frontotemporal dementia?

As it is defined today, the symptoms of frontotemporal dementia fall into two clinical patterns that involve either (1) changes in behavior, or (2) problems with language.

The first type features behavior that can be either impulsive (disinhibited) or bored and listless (apathetic) and includes:

  • inappropriate social behavior;

  • lack of social tact;

  • lack of empathy;

  • distractibility;

  • loss of insight into the behaviors of oneself and others;

  • an increased interest in sex;

  • changes in food preferences;

  • agitation or, conversely, blunted emotions;

  • neglect of personal hygiene;

  • repetitive or compulsive behavior; and

  • decreased energy and motivation.

The second type primarily features symptoms of language disturbance, including difficulty making or understanding speech, often in conjunction with the behavioral type's symptoms. Spatial skills and memory remain intact.




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Pick Disease

What is an MRI scan?

An MRI (or magnetic resonance imaging) scan is a radiology technique that uses magnetism, radio waves, and a computer to produce images of body structures. The MRI scanner is a tube surrounded by a giant circular magnet. The patient is placed on a moveable bed that is inserted into the magnet. The magnet creates a strong magnetic field that aligns the protons of hydrogen atoms, which are then exposed to a beam of radio waves. This spins the various protons of the body, and they produce a faint signal that is detected by the receiver portion of the MRI scanner. The receiver information is processed by a computer, and an image is produced.

The image and resolution produced by MRI is quite detailed and can detect tiny changes of structures within the body. For some procedures, contrast agents, such as gadolinium, are used to increase the accuracy of the images.

When are MRI scans used?

An MRI scan can...

Read the MRI (Magnetic Resonance Imaging Scan) article »







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